Abstract
This paper addresses the problem of congestion control in X.25 protocol relays for LAN/WAN interconnection. Load/throughput and load/transit delay curves are evaluated for different load situations, and for different traffic patterns such as interactive and batch traffic. The results show that, although the relay can always stay away from the congestion collapse situation due to the X.25 built-in flow control mechanisms, it can not guarantee fairness in the sharing of the relay internal resources and bandwidth among the active connections. The conclusions point to some possible solutions to this problem.
Résumé
L’article analyse le problème de la protection contre les encombrements dans les relais de protocole X.25. Les courbes donnant le débit et le temps de transit en fonction de la charge sont présentées pour différents types de charge et différents types de trafic, tels que trafic interactif et trafic par lots. Bien que les fonctions de contrôle de flux du protocole assurent l’absence d’effondrement par encombrement, le relais ne peut garantir l’équité dans l’utilisation de ses ressources internes et de la largeur de bande par les connexions actives. Des indications sont données sur les solutions possibles.
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Monteiro, E., Boavida, F. & Freitas, V. LAN/WAN interconnection : congestion control in X.25 protocol relays. Ann. Télécommun. 49, 90–102 (1994). https://doi.org/10.1007/BF02999648
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DOI: https://doi.org/10.1007/BF02999648
Key words
- Data communication network
- Packet switching
- Interconnected network
- Telecommunication traffic control
- Network layer
- Throughput
- Transit time
- Network gateway